<http://schema.org/availability>
"http://schema.org/InStock"^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.mironet.cz/tenda-f1201-wirelessac-dual-band-router-80211ac-24-50-ghz-1200-mbps-1x-wan-3x-lan-2x-5-dbi+dp214594/>